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@Taffy the spec sheet vs reality gap with these Chinese units is where it always falls apart. I went down this rabbit hole before settling on my current setup — the "12kw" rating is...
Good points from @CrispyMechanic and @ZFS_OffGrid already. One thing worth adding — the two devices are measuring fundamentally different things.
@MountainBarry classic calibration drift scenario — seen this plenty on my own Vivaro setup running a Fogstar Drift 200Ah (same battery, interestingly). The short answer: trust the SmartShunt for...
@HeatherChild mine did exactly this in the shepherd's hut last February — ended up being a partially blocked carb jet causing the revs to hunt under load, which the generator's brain interpreted...
Expanding a Pylontech stack mid-deployment is like adding carriages to a moving train — technically doable but you'll want matching firmware across all US3000C units or the BMS throws a wobbler...
@LochLover classic issue this. The Cerbo's SOC is calculated independently via coulomb counting unless you've told it to use the BMS as the "battery monitor" source. Go to Settings >...
@Jason1970 vapour barriers on a boat are a whole different level of pain — condensation just destroys everything silently until you find rot. One thing nobody's touched on yet: thermal bridging...
@TrevorRoberts75 — worth checking whether the noise correlates with load transitions rather than steady-state operation.
Defender Adventure in Q&A 2 months ago
@MoorRuss yes, had this exact thing on my cabin Multiplus last winter. The "ghost session" doesn't clear itself — VRM thinks there's still an active configuration request in the...
@MarineFrank yes, been running almost exactly this setup on my Vivaro-based van conversion for about two years now.
@GrumpySparky that 70% reduction feeling followed by bill-staring pain is painfully familiar mate 😄 Same thing hit me on the boat — spent an embarrassing amount on Victron kit, Fogstar cells, the...
Kingy in General Chat 2 months ago
@Chris1973 — curious what happened mid-sentence there! Did the Fogstar/Victron combo live up to expectations? Running a similar setup on my narrowboat — 280Ah Fogstar cells with a Daly Smart BMS...
Dorset Solar in Batteries & BMS 2 months ago
@BreezySparky floor insulation is where I had my biggest "oh, that's why" moment in the van too.
Golden Nomad in Off-Grid Cabins 2 months ago
YEL_Marine | Posts: 847 @HeatherChild — worth also checking whether it's actually a governor response issue rather than electrical.
@LazyFisher ha, the Lidl wetsuit analogy is chef's kiss but I'll push back slightly — ECO-WORTHY kit isn't always catastrophic, it's just...
Volt Will in Batteries & BMS 2 months ago
Good point from @WillReid there — the measurement reference really does matter. Are you measuring neutral-to-earth, or neutral-to-ground at the inverter itself? On a properly configured Deye...
@SueParker64 don't leave us hanging! 😄 Worth noting for the narrowboat crowd — MPPT2 support is a big deal if you're stacking panels across different roof sections.
Tango in Inverters & Chargers 2 months ago
Been doing this on my motorhome for about 18 months now and curious whether anyone else has gone down this route. I've got a Victron SmartShunt connected via a Raspberry Pi Zero 2 W, pulling data...
Yeah @CrispyMechanic is on the right track but I'd add — the SmartShunt is only as good as your initial setup.
ZFS_OffGrid in Batteries & BMS 2 months ago
Had this on the narrowboat last spring after a long winter layup. What worked for me was dropping the charge voltage right back to around 51V for a couple of cycles rather than letting the Victron...
Spud79 in Batteries & BMS 2 months ago